<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>p1_CSS的三种位置</title>
    <style>
        p{
            color: blue;
        }
        h4{
            border: 5px solid red;
        }
        div{
            width: 100px;
            height: 100px;
            background-color: red;
        }
        h2{
             color: red;!important;
        }
    </style>
    <link rel="stylesheet" href="01.css">
</head>
<body>
    <h4 style="color: pink;background-color: darkgreen">我是标题</h4>
    <h2 style="color: aqua;background-color: darkblue ">进风口大都是</h2>
    <p>我是段落</p>
    <p>我是段落</p>
    <p>我是段落</p>
    <p>我是段落</p>

    <div>我是div</div>
    <div>我是div</div>
    <div>我是div</div>

</body>
</html>